/* Copyright (c) 2010 Fabian Kulman
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/

#ifndef GUI
#define GUI

#include <chipmunk/chipmunk.h>
#include <iostream>

#include "space.h"

// Window
static int WINDOW_WIDTH = 800;
static int WINDOW_HEIGHT = 600;

static int WINDOW_POSITION_X = 600;	
static int WINDOW_POSITION_Y = 0;

// Translation
static GLfloat MOUSE_X = 0.0f;
static GLfloat MOUSE_Y = 0.0f;
static GLfloat MOUSE_OLD_X = 0.0f;
static GLfloat MOUSE_OLD_Y = 0.0f;

static GLfloat TR_X = 0.0f;
static GLfloat TR_Y = 0.0f;

// Rotation
static GLfloat RO_ANGLE = 0.0f;
static GLfloat RO_X = 0.0f;
static GLfloat RO_Y = 0.0f;
static GLfloat RO_Z = 1.0f;

static drawSpaceOptions SPACE_OPTIONS = {
	false,	// draw hash				
	false,  // draw bounding boxes	
	1.0f	// scaling factor
};

namespace gui{

static Space* space = NULL;
static Unit* activeUnit = NULL;
static cpConstraint* mouseJoint = NULL;
static bool mouseIsActive = false;
static bool mouseHasMoved = false;

// Callback functions for GLUT
void callBackKeypress(unsigned char key, int x, int y);

void callBackActiveMotion(int x, int y);
void callBackPassiveMotion(int x, int y);

void callBackMouseClick(int button, int state, int x, int y);

void callBackResize(int w, int h);
void callBackDisplay(void);

void destroy();

void initOpenGl();
void initGLUT(int argc, char** argv, std::vector<cpFloat>* vInput);

cpVect mouseToSpace(int x, int y);

}

#endif